小蘑菇的奇幻森林

May 20th, 2025

Ubuntu22.04 设置无法打开

记录一次Ubuntu下设置打不开的奇怪问题

$ echo $DISPLAY
echo $XDG_SESSION_TYPE
gnome-control-center --verbose
:0
wayland
总线错误 (核心已转储)

June 5th, 2024

gitea 的烦人认证

gitea 默认启用了SSH的RSA密钥使用3072的长度

December 19th, 2023

vscode 不能代码跳转

VSCode无法代码跳转的修复

November 5th, 2023

Armbian 上编译 synergy-core

April 12th, 2023

数学统计的实际意义

标准差

August 12th, 2022

用Cython来加速numpy数据操作

Cython是可以方便地用类Python语法代码编译生成C代码,免除多平台下复杂的C++工程配置.

November 7th, 2021

Linux 开发中使用VSCode连接进程PID调试

VScode连接 Python 进程调试时出现 “timed out waiting for debug server to connect” 提示, 连接失败.

October 20th, 2021

Linux 开发中查看日志

多日志文件查看

tail -f log/*.log

September 30th, 2021

Ubuntu 18.04 中安装 VIM8

VIM 8.2 释出已经有一段时间了. Ubuntu18.04自带的VIM7已经无法和其它平台同步插件配置了. 那么就把Ubuntu系统中的VIM升级一下吧.

May 6th, 2021

Unity C# Warnings as Errors

泛型代码的错误书写会导致原有的Warning都变成Error

April 21st, 2021

C#

C# 的预处理简直弱爆了

April 19th, 2021

C# ToLower 速度优化

C# program that implements lowercase optimization

November 8th, 2020

Jedi-vim 在打开 py 文件时报错 bad magic number in

Jedi-vim 是 vim 中非常好用的 Python 语言插件, 可以自行分析代码进行文件跳转,补全….

August 30th, 2020

手动控制 AMD RX5700XT 的风扇转速

第一次频繁死机

July 7th, 2020

scikit-learn

常用操作

April 29th, 2020

中国依赖美国的根本不是什么经济

中国依赖美国的根本不是什么经济，而是发展的原创驱动力。说具体点，就是开创全新科技、全新产业、开辟全新生存空间的能力。

April 25th, 2020

Linux 下快速查找文件

用习惯了 Windows 下的 everything，换到Linux时还真有点不太习惯，还好找到了 locate 来弥补这个功能。

April 17th, 2020

Theano + OpenCL

在 Linux 下要尝试搞一搞机器学习，可惜只有一张A卡，就让我用 OpenCL 来加速吧。

April 15th, 2020

Ubuntu 锁定内核版本

总会有一些时候你对指定的软件不想（bu neng）更新到更新的版本。例如 Linux - kernel 硬件厂商的支持不紧跟上来升了内核可能整个系统不歇菜了。

February 29th, 2020

通过 dhcpcd 配置IP地址

对于IP地址通常情况下是用 /etc/network/interfaces 中配置的,最近为了统一RaspberryPI的环境使用 dhcpcd 来配置.

February 23rd, 2020

PandoraBox 常用配置

本来想直接用起来OpenWRT的，折腾了一下还是放弃了，技术不行还是有难度。

February 11th, 2020

【Error】sh4d0ws0ck4 启动错误

出错日志

February 10th, 2020

Linux 下使用USB-Cam的方法

在Linux下可以很方便高效地使用你的USB-Camera，我来记录一下使用方法。

January 7th, 2020

apt-get 使用国内源及自己搭建镜像

这个方法绝对会给Linux用户在使用过程中带来一个非常好的体验!

December 22nd, 2019

Linux 查看硬件信息

Linux用久了，有时候需要查看一下硬件的信息，以方便安装新硬件，或者安装驱动啥的。

November 23rd, 2019

转移整个系统到新硬盘上不重装

情景是这样的：我有一台老式的台式机电脑，新添了一个固态硬盘，我想把装在原来的机械硬盘上的操作系统转移到新的固态硬盘上。原来的操作系统是Debian 8 (Jessie)，机械硬盘容量是250G；新的固态硬盘是120G的。

November 12th, 2019

apt-get 使用 socks5 代理

随着神经网络技术应用到伟大的防火墙上以后，墙越来越聪明。终于 apt 源也被盯上了。

October 17th, 2019

AMD Graphics Card

AMD Navi 图形卡架构介绍

September 23rd, 2019

Raspberry PI 3B+ 支持 OpenCL 1.2

$ sudo clinfo
Number of platforms                               1
  Platform Name                                   OpenCL for the Raspberry Pi VideoCore IV GPU
  Platform Vendor                                 doe300
  Platform Version                                OpenCL 1.2 VC4CL 0.4.9999
  Platform Profile                                EMBEDDED_PROFILE
  Platform Extensions                             cl_khr_il_program cl_khr_spir cl_khr_create_command_queue cl_altera_device_temperature cl_altera_live_object_tracking cl_khr_icd cl_vc4cl_performance_counters
  Platform Extensions function suffix             VC4CL
 
  Platform Name                                   OpenCL for the Raspberry Pi VideoCore IV GPU
Number of devices                                 1
  Device Name                                     VideoCore IV GPU
  Device Vendor                                   Broadcom
  Device Vendor ID                                0xa5c
  Device Version                                  OpenCL 1.2 VC4CL 0.4.9999
  Driver Version                                  0.4.9999
  Device OpenCL C Version                         OpenCL C 1.2 
  Device Type                                     GPU
  Device Profile                                  EMBEDDED_PROFILE
  Device Available                                Yes
  Compiler Available                              Yes
  Linker Available                                No
  Max compute units                               1
  Max clock frequency                             300MHz
  Core Temperature (Altera)                       53 C
  Device Partition                                (core)
    Max number of sub-devices                     0
    Supported partition types                     None
    Supported affinity domains                    (n/a)
  Max work item dimensions                        3
  Max work item sizes                             12x12x12
  Max work group size                             12
 
  Preferred work group size multiple              1
  Preferred / native vector sizes                 
    char                                                16 / 16      
    short                                               16 / 16      
    int                                                 16 / 16      
    long                                                 0 / 0       
    half                                                 0 / 0        (n/a)
    float                                               16 / 16      
    double                                               0 / 0        (n/a)
  Half-precision Floating-point support           (n/a)
  Single-precision Floating-point support         (core)
    Denormals                                     No
    Infinity and NANs                             No
    Round to nearest                              No
    Round to zero                                 Yes
    Round to infinity                             No
    IEEE754-2008 fused multiply-add               No
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  No
  Double-precision Floating-point support         (n/a)
  Address bits                                    32, Little-Endian
  Global memory size                              268435456 (256MiB)
  Error Correction support                        No
  Max memory allocation                           268435456 (256MiB)
  Unified memory for Host and Device              Yes
  Minimum alignment for any data type             64 bytes
  Alignment of base address                       512 bits (64 bytes)
  Global Memory cache type                        Read/Write
  Global Memory cache size                        32768 (32KiB)
  Global Memory cache line size                   64 bytes
  Image support                                   No
  Local memory type                               Global
  Local memory size                               268435456 (256MiB)
  Max number of constant args                     64
  Max constant buffer size                        268435456 (256MiB)
  Max size of kernel argument                     256
  Queue properties                                
    Out-of-order execution                        No
    Profiling                                     Yes
  Prefer user sync for interop                    Yes
  Profiling timer resolution                      1ns
  Execution capabilities                          
    Run OpenCL kernels                            Yes
    Run native kernels                            No
    IL version                                    SPIR-V_1.2 SPIR_1.2
    SPIR versions                                 1.2
  printf() buffer size                            0
  Built-in kernels                                (n/a)
  Device Extensions                               cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store cl_nv_pragma_unroll cl_arm_core_id cl_ext_atomic_counters_32 cl_khr_initialize_memory cl_arm_integer_dot_product_int8 cl_arm_integer_dot_product_accumulate_int8 cl_arm_integer_dot_product_accumulate_int16 cl_arm_integer_dot_product_accumulate_saturate_int8 cl_khr_il_program cl_khr_spir cl_khr_create_command_queue cl_altera_device_temperature cl_altera_live_object_tracking cl_khr_icd cl_vc4cl_performance_counters
 
NULL platform behavior
  clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...)  OpenCL for the Raspberry Pi VideoCore IV GPU
  clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...)   Success [VC4CL]
  clCreateContext(NULL, ...) [default]            Success [VC4CL]
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT)  Success (1)
    Platform Name                                 OpenCL for the Raspberry Pi VideoCore IV GPU
    Device Name                                   VideoCore IV GPU
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU)  Success (1)
    Platform Name                                 OpenCL for the Raspberry Pi VideoCore IV GPU
    Device Name                                   VideoCore IV GPU
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL)  Success (1)
    Platform Name                                 OpenCL for the Raspberry Pi VideoCore IV GPU
    Device Name                                   VideoCore IV GPU
 
ICD loader properties
  ICD loader Name                                 OpenCL ICD Loader
  ICD loader Vendor                               OCL Icd free software
  ICD loader Version                              2.2.12
  ICD loader Profile                              OpenCL 2.2